NOAA-CIRES-DOE Twentieth Century Reanalysis Version 3

The Twentieth Century Reanalysis Project, produced by the Earth System Research Laboratory Physical Sciences Division from NOAA and the University of Colorado Cooperative Institute for Research in Environmental Sciences using resources from Department of Energy supercomputers, is an effort to produce a global reanalysis dataset spanning a portion of the nineteenth century and the entire twentieth century (1836 - 2015), assimilating only surface observations of synoptic pressure into an 80-member ensemble of estimates of the Earth system. Boundary conditions of pentad sea surface temperature and monthly sea ice concentration and time-varying solar, volcanic, and carbon dioxide radiative forcings are prescribed. Products include 3 and 6-hourly ensemble mean and spread analysis fields and 6-hourly ensemble mean and spread forecast (first guess) fields on a global Gaussian T254 grid. Fields are accessible in yearly time series (1 file per parameter).

The NOAA-CIRES-DOE Twentieth Century Reanalysis Version 3 uses the NCEP Global Forecast Model that was operational in autumn 2017, with differences as described in (Slivinski et al. 2019). Sea ice boundary conditions are specified from HadISST 2.3 (Slivinski et al. 2019). Sea surface temperature fields prior to 1981 are prescribed from the 8-member ensemble of pentad Simple Ocean Data Assimilation with sparse input (SODAsi.3, Giese et al. 2016) and from the 8-member ensemble of pentad HadISST 2.2 for 1981 to 2015. Observations from ISPD version 4.7 are assimilated using an ensemble Kalman filter.

The Twentieth Century Reanalysis Project version 3 used resources of the National Energy Research Scientific Computing Center managed by Lawrence Berkeley National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 and used resources of NOAA's Remote Deployed High Performance Computing Systems. Version 3 is a contribution to the international Atmospheric Circulation Reconstructions over the Earth initiative. Support for the Twentieth Century Reanalysis Project is provided by the Physical Sciences Division of the NOAA Earth System Research Laboratory, the U.S. Department of Energy Office of Science (BER), and the NOAA Climate Program Office MAPP program.

To Access Resource:

Questions? Email Resource Support Contact:

  • Riley Conroy
    UCAR/NCAR - Research Data Archive

Temporal Range

  • Begin:  1805-12-31T00:00:00Z
    End:  2016-01-01T21:00:00Z


Resource Type dataset
Temporal Range Begin 1805-12-31T00:00:00Z
Temporal Range End 2016-01-01T21:00:00Z
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Related Resource #1 : Software that converts NetCDF files into WRF intermediate files.

Additional Information N/A
Resource Format NetCDF4 (Binary)
Standardized Resource Format NetCDF
Asset Size 70781247 MB
Legal Constraints

Use of this dataset is subject to UCAR's Terms of Use, except that commercial use is generally not prohibited.

Access Constraints Registration on the RDA web site is a requirement for access to the data.
Software Implementation Language N/A

Resource Support Name Riley Conroy
Resource Support Email
Resource Support Organization UCAR/NCAR - Research Data Archive
Distributor NCAR Research Data Archive
Metadata Contact Name N/A
Metadata Contact Email
Metadata Contact Organization NCAR Research Data Archive

Author Slivinski, Laura C.
Compo, Gilbert P.
Whitaker, Jeffrey S.
Sardeshmukh, Prashant D.
Giese, Benjamin S.
McColl, Chesley
Brohan, Phillip
Allan, Rob
Yin, Xungang
Vose, Russell
Titchner, Holly
Kennedy, John
Spencer, Lawrence J.
Ashcroft, Linden
Bronnimann, Stefan
Brunet, Manola
Camuffo, Dario
Cornes, Richard
Cram, Thomas A.
Crouthamel, Richard
Dominguez-Castro, Fernando
Freeman, J. Eric
Gergis, Joelle
Hawkins, Ed
Jones, Philip D.
Jourdain, Sylvie
Kaplan, Alexey
Kubota, Hisayuki
Blancq, Frank Le
Lee, Tsz-Cheung
Lorrey, Andrew
Luterbacher, Jurg
Maugeri, Maurizio
Mock, Cary J.
Moore, Kent
Przybylak, Rajmund
Pudmenzky, Christa
Reason, Chris
Slonosky, Victoria C.
Smith, Cathy
Tinz, Birger
Trewin, Blair
Valente, Maria Antonia
Wang, Xiaolan L.
Wilkinson, Clive
Wood, Kevin
Wyszynski, Przemyslaw
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2019-05-15
Digital Object Identifier (DOI)
Alternate Identifier ds131.3
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2024-04-14T18:05:02-07:00
Metadata Record Identifier edu.ucar.rda::ds131.3
Metadata Language eng; USA
Suggested Citation Slivinski, Laura C., Compo, Gilbert P., Whitaker, Jeffrey S., Sardeshmukh, Prashant D., Giese, Benjamin S., McColl, Chesley, Brohan, Phillip, Allan, Rob, Yin, Xungang, Vose, Russell, Titchner, Holly, Kennedy, John, Spencer, Lawrence J., Ashcroft, Linden, Bronnimann, Stefan, Brunet, Manola, Camuffo, Dario, Cornes, Richard, Cram, Thomas A., Crouthamel, Richard, Dominguez-Castro, Fernando, Freeman, J. Eric, Gergis, Joelle, Hawkins, Ed, Jones, Philip D., Jourdain, Sylvie, Kaplan, Alexey, Kubota, Hisayuki, Blancq, Frank Le, Lee, Tsz-Cheung, Lorrey, Andrew, Luterbacher, Jurg, Maugeri, Maurizio, Mock, Cary J., Moore, Kent, Przybylak, Rajmund, Pudmenzky, Christa, Reason, Chris, Slonosky, Victoria C., Smith, Cathy, Tinz, Birger, Trewin, Blair, Valente, Maria Antonia, Wang, Xiaolan L., Wilkinson, Clive, Wood, Kevin, Wyszynski, Przemyslaw. (2019). NOAA-CIRES-DOE Twentieth Century Reanalysis Version 3. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. Accessed 19 May 2024.

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